A Russian pilot warned the Kremlin "you can make mistakes, but you can't lie" as they raged over unpaid bonuses.

Secretary of Defense Lloyd J. Austin III confirmed on Wednesday that North Korea had sent troops to Russia to join the fight against Ukraine, a major shift in Moscow’s effort to win the war. Mr. Austin called the North’s presence a “very serious” escalation that would have ramifications in both Europe and Asia.

The Kremlin's alliance with North Korea may have bolstered its campaign in Ukraine, but it's come at a potentially serious cost. South Korea's government this week signaled its fury over the growing alliance between the two countries.